Battery Type: Lithium-ion Volts: 14.8V Capacity: 4400mAh Color: Grey Description Rechargeable Laptop Battery for Lenovo Y510, Y520, 1+1 L510 Series laptop computer. This battery can replace the following part numbers: BAT52EW This battery is also compatible with the following models: Lenovo Y510, Y520, 1+1 L510 Series.